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Titolo:
SYNTHESIS AND CRYSTAL-STRUCTURE OF AN 8-COORDINATED TETRAKIS[2-(PHENYLAMIDO)PYRIDINE]HAFNIUM AND COMPARISON WITH A 4-COORDINATED TETRAKIS(DIPHENYLAMIDO)HAFNIUM(IV)
Autore:
POLAMO M; LESKELA M;
Indirizzi:
UNIV HELSINKI,DEPT CHEM,INORGAN CHEM LAB,POB 55 FIN-00014 HELSINKI FINLAND
Titolo Testata:
Acta chemica Scandinavica
fascicolo: 1, volume: 51, anno: 1997,
pagine: 69 - 72
SICI:
0904-213X(1997)51:1<69:SACOA8>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMICAL VAPOR-DEPOSITION; NITRIDE THIN-FILMS; LAYER EPITAXY GROWTH; COMPLEXES; AMMONIA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
M. Polamo e M. Leskela, "SYNTHESIS AND CRYSTAL-STRUCTURE OF AN 8-COORDINATED TETRAKIS[2-(PHENYLAMIDO)PYRIDINE]HAFNIUM AND COMPARISON WITH A 4-COORDINATED TETRAKIS(DIPHENYLAMIDO)HAFNIUM(IV)", Acta chemica Scandinavica, 51(1), 1997, pp. 69-72

Abstract

The crystal structure of tetrakis[2-(phenylamido)pyridine]hafnium hasbeen determined. The complex has been obtained in a direct reaction between hafnium(IV) chloride and 2-(phenylamino)pyridine. Ligand precursors lose amino protons and form very small chelate rings, with an average N-Hf-N angle of 58.3(3)degrees. The complex crystallizes in the monoclinic C-centered space group C2/c with the unit cell parameters a=24.213(11) Angstrom, b=7.916(8) Angstrom, c=20.432(9) Angstrom, and P=112.01(3)degrees. The hafnium atom lies on the diad axis at x=1/2, z=3/4 and leaves half of the molecule crystallographically independent. Hafnium posseses coordination number eight, and thus the coordination sphere can be roughly defined as a triangulated dodecahedron. Data werecollected at 193 K.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 12:13:01